J-Raffe Fabrication

J-Raffe Fabrication Specializes in custom fabrication, wiring, EFI swaps, suspension set up, custom sheet metal and modern muscle upgrades.

My name is Jim Koncker and I've been building specialty vehicles professionally for over a decade. Started off working on my own projects when I was 15 with my Dad and have been passionate about building awesome cars ever since. Before going out on my own, I had the opportunity to work at two fantastic shops, where I worked with some amazing people and learned some invaluable skills. Then my super

cool wife talked me into branching out on my own, so here we are. J-Raffe Fabrication is the name of my business, and this page shows some of the awesome projects I've gotten to work on since going out on my own. If interested in an EFI swaps, custom suspension, electrical work, custom fabrication, track day prep and modern muscle upgrades, and much more, please feel free to message me.

Interior fabrication is coming along on the 67 Camaro. The owner likes his Mercedes so we fit these SL seats for him. T...
05/01/2026

Interior fabrication is coming along on the 67 Camaro. The owner likes his Mercedes so we fit these SL seats for him. The rear seat delete panel was brought forward to better fill in the space and create room for stereo components and some storage. Hand made aluminum door panels and armrests. Next up center console and trunk panels.

Photos by itsmaxkoch

The C6 Z06 Racecar is just about complete. New carbon body is fitted, new custom inner wheel houses/ fender liners are b...
04/24/2026

The C6 Z06 Racecar is just about complete. New carbon body is fitted, new custom inner wheel houses/ fender liners are being made for more clearance. Added a new quick fill for fuel and a cool suit for the driver.

When you need to check the oil or might need to change the engine! The fab shop did an awesome job creating a hinge set ...
04/19/2026

When you need to check the oil or might need to change the engine! The fab shop did an awesome job creating a hinge set up that allows the hood to go full vertical. This keeps it out of the way of any work we need to do in between sessions.

The chassis is done for the 79 Hurst Olds project and being torn down for powder coating. Everything is pre fitted, st...
04/17/2026

The chassis is done for the 79 Hurst Olds project and being torn down for powder coating. Everything is pre fitted, stainless brake and fuel lines bent up and installed. Now time for the shiny stuff.

04/16/2026
04/16/2026

Owner told us too, those are the snow capped sands dunes of Mexico obviously.

944 Champ Car racecar came in for a new weld-in DOM cage to replace the bolt-in cage that was in it. Bit of a challenge ...
04/08/2026

944 Champ Car racecar came in for a new weld-in DOM cage to replace the bolt-in cage that was in it.
Bit of a challenge to make it fit 3 different drivers with 10" of height difference but it came out great. Good luck to Lee and his team, can't wait to see it on track this spring!

Custom headers for our 67 Camaro vintage road race car project. Stepped, tuned, equal length stainless headers always lo...
03/11/2026

Custom headers for our 67 Camaro vintage road race car project. Stepped, tuned, equal length stainless headers always look good and sound great.
With parts from and

Crazy to think we have been here for almost 10 years but as of today we closed on our new shop. Moving into a new shop a...
02/27/2026

Crazy to think we have been here for almost 10 years but as of today we closed on our new shop.
Moving into a new shop and over doubling our space. We are looking forward to the next chapter of J-Raffe Fabrication and what we will be building next!

We are finishing up the new space and will update new shop pictures in a couple weeks.

The 67 Camaro project is moving along. We tore the car back down to paint the LS7 and start on interior work. We restruc...
02/17/2026

The 67 Camaro project is moving along. We tore the car back down to paint the LS7 and start on interior work.
We restructured the floors and inner rockers to fit the Mercedes SL seats with integrated seat belts. Next we moved our attention to the rear seat delete and started aluminum shaping it out of aluminum. Next up door panels, center console and trunk.

Address

Minneapolis, MN

Opening Hours

Monday 9am - 5:30pm
Tuesday 9am - 5:30pm
Wednesday 9am - 5:30pm
Thursday 9am - 5:30pm

Telephone

+16515926293

Website

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